2 Product Description
2.1 Products included
Pump model Standard EX MSHA Drainage Sludge
2620.172 X X
2620.281 X X
2.2 Pump design
The pump is submersible, and driven by an electric motor.
Intended use
The product is intended for moving waste water, sludge, raw and clean water. Always
follow the limits given in Technical Reference on page 65. If there is a question regarding
the intended use of the equipment, then contact a sales or authorized service
representative before proceeding.
DANGER: Explosion/Fire Hazard
Special rules apply to installations in explosive or flammable atmospheres. Do not install
the product or any auxiliary equipment in an explosive zone unless it is rated explosion-
proof or intrinsically-safe. If the product is rated explosion-proof or intrinsically-safe, then
see the specific explosion-proof information in the safety chapter before taking any
further actions.
NOTICE:
Do NOT use the unit in highly corrosive liquids.
For information about pH, see Technical Reference on page 65.
The warm media (liquid) version has certain operational limitations, which are stated on a
plate on the pump. For applicability, see Technical Reference on page 65.
Particle size: Drainage pump
The pump can handle liquid containing particles that correspond to the holes in the
strainer.
Pump Number of holes Hole dimensions
Diameter, mm (in)
2620.172 224 9 (0.35)
Particle size: Sludge pump
The pump can handle liquid containing particles with a maximum diameter as shown in
the table.
Pump Particle size
Diameter, mm (in)
2620.281 50 (1.97)
Pressure class
MT Medium head
Impeller type
Version code 172: B Wear resistant with Dura-Spin
®
Version code 172: K Clog resistant
2 Product Description
2620.172/.281 Service and Repair Instructions 7
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